Bushing structure



Sept. 8, 1931.

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BUSHING STRUCTURE Patented Sept. 8, 1931 UNITED STATES PATENT OFFICE HENRY SCHWARTZ, OF CHICAGO, ILLINOIS, ASSIGNOR TO BARREL FITTING AND SEAL CORPORATION OF AMERICA, 0F CHICAGO, ILLINOIS, A CORPORATION OF ILLINOIS BUSHING STRUCTURE Application filedl September 2, 1927. .Serial No. 217,031.

This invention relates to a bushing structure and the method of formin the same, and has special reference to a bus ing structure as employed particularly in the construction of metallic barrels and containers such as are used for storing or shipping oils or other liquids or semi-liquids, the bushing structure being provided to receive a bung or stopper in a fluid tight assembly.

More particularly, this invention relates to a bushing structure comprising a main body portion secured in a flange, the former having 'a threaded aperture therein for receiving a bung, and the latter being preferably formed integrally with the barrel wall or other supporting body with which it is associated. The flange is preferably struck outwardly from the barrel or other container in order that the assembly of the elements of the bushing structure be disposed in a plane beyond the inner surface of the wall of the container.

In bushing structures in present day use, the assembly usually projects into the container a substantial distance and it is impossible to drain the entire contents of the barrel. It will be apparent in the construction of the present invention that the aforementioned positioning of the assembly in the con,- tainer will afford a means whereby the contents of the barrel will have no obstruction to its outward flow.

It is also a feature of this invention to provide a new and novel method 0f forming a bushing structure which comprises forming a flange at the periphery of'an aperture in a barrel or other container, then inserting a threaded apertured body portion into the flanged portion, and finally in dove-tailing the flanged portion to secure the body portion rigidly and firmly in position. t

In order to guard against the unauthor1zed opening of the barrel or container, means are provided for sealing the bung or stopper, said means being preferably included 1n the bushing assembly and comprislng a ring or flanged collar having a plurality of apertures therein to receive a sealing wire or strlng also threaded through an aperture in a projection on the stopper or bung. s

Further objects and advantages w1ll hereinafter be referred to, and for a better understanding of the nature, characteristics and scope of this invention, reference may be had to the accompanying drawings and the following description, in which drawings;

Figure l is an end View of a portion of a barrel head showing the flanged portion of the bushing structure prior to receiving the body portion; l.

Fig. 2 is a vertical sectional view taken on the line 2 2 of Fig. 1;

Fig. 3 is a bottom plan view of the body portion of the bushing structure; 2

Fig. 4 is a vertical sectional view, similar to Fig. 2, vshowing the bushing assembly, together with a bung in threaded engagement therewith;

Fig. 5 isa sectional view of a barrel head blank;

Fig. 6 is a sectional view of a punch and die mechanism showing a flange being formed on the blank of Fig. 6;

Fig. 7 is a sectional view of another punch and die mechanism showing the body portioninserted in the flanged portion of the blank and in position to receive the dovetailing or crimping action of the die;

Fig. 8 is a View similar to Fig. 7, showing a changed position of the punch and die members wherein the flange is dove-tailed or crimped to retain the main body portion of the bushing structure;

Fig. 9 is the final operation showing a portion of the flange member being bent over or crimped to receive an element of the seal;

Fig. 10 is a bottom plan view of the body portion of a modified form of bushing structure particularly adapted for use as a vent opening;

Fig. 11 is a sectional View showing the body portion of Fig. 10 as assembled in the fianged portion of a barrel head; and

Fig. l2 is a fragmentary sectional view of a further modification of a bushing structure assembly.

Referring now to the drawings, and particularly to Figs. l1 to 4:,v inclusive, a barrel head-.15, or supporting wall of any container, is shown, preferably formed of a sheet material such assteel. A flanged portion 16 is preferably integrally formed with the head and projects outwardly from the barrel or container to form a socket, and has a second flanged portion 17 of a smaller diameter, preferably formed integrally therewith.

The flanged portion or socket 16 is preferably polygonal in its peripheral contour to receive a main body portion 18 of a similar peripheral contour whereby the latter is prevented from turning therein. The reduced flanged portion 17 is preferably annular in shape and the junction between the two flanged portions 16 and 17 provides a shoulder 17a for supporting a ring 19 of the seal. The ring 19 is provided with a plurality of ears 19a having apertures therein for purposes which will be hereinafter more fully described.

The main body portion 18 is formed of an apertured casting having a relatively great number of edges preferably polygonal and regular in its peripheral contour although it isto be understood that this shape is merely for convenience in the assembly of the bushing structure and that any non-circular peripheral contour may be effectively employed. The casting may be made of malleable iron or other suitable material.

Each of the edges 20 of the polygonal body portion 18 is tapered, the taper of two edges when viewed together in cross section converging rearwardly or inwardly from the outer surface thereof, that is, the outer diameter of the bottom surface being smaller than the outer diameter of the top surface. The polygonal flange 16 is adapted to snugly engage the tapered edges 20 of the main body portion to form a dove-tail in order to secure the body portipn in fixed assembled relation with the barrel head. The annular flange 17 is formed over the internal edge of the ring 19 in order to clamp the latter in a fixed relation with the bushing assembly.

It will be seen that by forming the flange 16 outwardly from the container, the threaded surface of the aperture of the body portion 18 is of sufficient height to accommodate five full threads, this number being ordinarily prescribed in these constructions, which result is accomplished without having the body portion 18 extend within the inner side of the barrel head. It will be readily apparent that the flow of oil through the threaded aperture formed in the body portion 18 will be unrestricted and the full contents of the barrel or container may be withdrawn.

A bung 21 is threaded into the threaded aperture of the body portion 18 and comprises a bore portion 22 having a flange 23 on the outer side theref. A sealing gasket 24 is interposed between the flange 23 and the bead formed by the bent flange 17, the gasket, of course, serving to prevent leakage of the fluid container in the barrel. A projection 25 is preferably integrally formed on the outer periphery of the flange 23- and has an aperture 26 therein in which a sealing wire is contained, the sealing wire extending through one of the apertures 27 formed in the ring 19. After the bung 21 has been threaded into the bushing structure, the sealing wire is passed through the aperture 26 and the nearest aperture 27, whereafter the ends of the sealing wire are sealed in the usual manner.

The structure of the bushing assembly has been described in detail and now in connection with Figs. 5 to 9, inclusive, the manner of forming this structure will be described. The barrel head blank 15 is provided with an aperture 28 in any well known manner, wherea-fter the latter is interposed between a punch 29 comprising an enlarged head 29a having a polygonally shaped portion 29?) of a smaller diameter extending downwardly therefrom, and a die 30 having an aperture of a similar contour, the polygonally shaped portion 296 having an annular projection 31 formed thereon of a substantially smaller diameter, and the die 30 having an annular aperture of a diameter greater than the diameter of the annular projection 31 by the thickness of the material of the barrel head 15. A11 annular recessed portion 290 is formed on the shoulder obtained by means of the junction of the enlarged head portion 29a and the polygonally shaped portion 296. These punch and die members form flanged portions on the barrel head of two different diameters, the flanged portion having the larger diameter being of a polygonal contour and the flanged portion of the smaller diameter being preferably annular. Also, an annular beaded portion 16a is formed between the flange 16 and the barrel head 15.

The barrel head is then placed on a die member preferably comprising a series of segments 32 pivotally mounted on a supporting structure 33, one segment being required for each side of the polygonal sided flange. The segment 32 preferably extends the full width of the flange and is held in position (see Fig. 7) by means of spring pressed plungers 34, which latter extend through, and are supported by, the supporting structure 33. In order to limit the upward movement of the pivotally mounted segments 32, an adjustable screw .member 35 is threaded in a vertically extending projection of the supporting platform 33 to engage an offset portion in the segment 32. It will be apparent that by adjusting the screw members 35, the height of the free end of the segment 32 will be raised or lowered as desired. x

The segment 32 is provided with a tapered engaging face forming an acute angle, as at 36, with the upper surface thereof. The body portiony 18 is inserted in the socket or flanged portion of the barrel head 15, with the smaller diameter of the body portion on top or toward the inner side of the barrel head. By referring to Fig. 8 it will be seen that the punch member 37 has been brought down on the barrel head 15, and that the segments 32 have been pivoted to such a position that the diameter between the diametrically opposite upper edge portions 36 of the engaging face is smaller than the diameter between the corresponding upper edge portions 36l of the engaging face in Fig. By reason of the taper of the engaging face, the flange 16 is crimped inwardly and the material allowed by reason of the beaded portion 16a isY taken up so that the side walls of the flange converge inwardly toward the barrel head to engage the tapered edges of the main body portion and hold-the latter in a secure assembled relation therein.

The barrel head 15 is next interposed between a die and'punch member 38 and 39, respe'ctively, and the ring 19 of the sealing device rests on the shoulder formed between the flange 16 and the flange 17. rIhe actuation of the punch and die members forms the flange member 17 over the ring 19 in order that the latter may have a fixed relation in the bushino` structure. Although it has hereinbefore Cbeen stated that the flange 17 is annular and is inserted in an annular aperture in the ring 19, it may be desirable to form the flange of a poly onal contour in which case the punch and die members 31 and 30, respectively, will be of the same contour,

By referring particularly to Figs. 10 and 11, it will be seen that a construction is shown wherein only a part of the edges of the apertured body portion 41 is tapered. The particular construction shown is employed asI a vent to be used in a barrel head, together 'with p the bushing structure of the previous embodiment, the latter for receiving the bung.

The die member for this construction may comprise a plurality of segments 32 (see Fig. 7), one segment for each tapered edge only, with the provision that, the tapered edges are preferably diametrically opposed. The flanged portion 17 shown `1n the. preceding embodiment, has been omitted from this construction inasmuch as it may be desirable in some instances to omit any sealing means. Further, a gasket 42 has been provided between the upper surfaces of the bodyy portion 41 and the flange 43 to avoid any possibility of leakage between the body portion 41 and the flange 43. It will be noted that the main bodv portion 41 also lies in a plane outside of the outermost portion of the barrel head, as in the revious embodiment, sothat, if this form ofP construction is used for the bung, the contents of the barrel may be completely emptied as in the construction shown in Figs. 1 to 4.

By referring now to Fig. 12 ofthe drawings, it will be seen that the flanged portion 45 has not been bent as abruptly from the barrel head 15 as that ofthe precedin embodiments whereby a.miniature well is ormed as at 46. The .contents of this well, however small in quantity, ma be readily drained by providing notches 4 on the body portion. The full number of threads required to engage a bung may be obtained in this manner without limiting the height of the body portion. u

While several embodimentsof the invention are herein shown and described, it is to be understood thatvarious modifications will be apparent to those skilled in the art without departing from the spirit and scope of this invention, and it is desired, therefore, that the same be limited only by the scope of the prior art and the appended claims.

I claim:

1. A bushing structure for a metal barrel and the like. comprising a socket of anoncircular peripheral contour formed from the sheet metal surrounding a hole in a wall ofv said barrel and extending directly outwardly from the plane of said wall and providing an integral radially inwardly extending annular flange on the outer end of said socket, and an apertured bushing disposed in said socket the opening in said bushing registering with the opening surrounded by sa1d annular flange, said bushing being adapte-d to receive threaded closure means and having inwardly converging sides against which the side walls of said socket engage to form a contact making area between said bushing and said socket at least a portion of which contact making area lies within the plane of said wall of the barrel.

2. A bushing structure for a metal barrel and the like comprising a socket of a non-circular peripheral contour formed from the sheet metal surrounding a hole in a wall of said barrel and extending directly outwardly from and then wall to provide an annular flange around said hole on the outer side of said socket, and an apertured bushing disposed in said socket having its opening registering with said opening in said socket, said bushing being adapted to receive threaded closure means and having inwardly converging sides against which parallel to the plane. of said the side walls of said socket engage to form a securing means of a dove-tail cross section that comprises a contact making area between said bushing and said socket at least a portion of which sa1d contact making area lies within the plane of said wall of the barrel.

3. A bushing structure for a metal barrel and the like com rising a socket of a non-circular .periphera contour formed from the sheet metal material surrounding a hole in a wall of said barrel said socket having a collar portionv extendin directly outwardly from the plane of sai wall and an annular flange extending radially inwardly from said las collar portion and around said hole, and an apertured bushing disposed in said socket for receiving threaded closure means, said bush ing having inwardly converging sides against 5 which said side walls of said socket engage to form a securing means of a dove-tail cross section and the outer face of said bushing being in close contact with the under surface of said annular flange, said securing means of a dovetail cross section comprising a Contact making area between said bushing and said socket at least a portion of which Contact making area lies within the plane of said wall of the barrel.

44. A bushing structure for a metal barrel and the like comprising a socket of a noncircular peripheral contour formed around a hole in the sheet metal Wall of said barrel, said socket being formed from the sheet metal surrounding said hole and comprising a collar portion extending directly outwardly from the plane of said wall, and an integrally formed flange on said collar surrounding said hole, and an apertured body portion dis- 26 posed in said socket and registering with said hole for receiving a threaded closure means, said body portion having inwardly converging sides and the flange of said socket overlying said body portion, the walls of 30 said socket being formed to engage said converging sides wherebv a securing means is obtained that comprises a contact making area, between said bushing and said socket at least a portion of which said contact making area lies within the plane of said wall of the barrel, and the walls constituting said collar and said integral flange being of substantially uniform thickness and of substantially the same thickness as the sheet metal initially 4c surrounding the said hole.

5. A bushing structure for a metal barrel and the like comprisinga socket of non-circular peripheral contour formed from the sheet metal surrounding a hole in a wall of da said barrel and extending direct-ly outwardly from the plane of said wall and providing an integral radially inwardly extending annular ange on the outer end of said socket, and an apertured biEhingdisposedin said socket, said bushing being adapted to receive threaded closure means and having inwardly converging sides against'which the side walls of said socket engage to form a contact making area between said bushing and said socket at least a portion of which contact making area lies wit-hin the plane of said wall of thebarrel.

In witness whereof, I have hereunto subscribed my name.

. HENRY SCHWARTZ. 

